Raizo (Rain) is raised by the Ozunu Clan to become the most lethal Ninja assassin in the world. As a child, Raizo being an orphan is taking by Lord Ozuno (Sho Kosugi) and is enrolled in severe brutal training. The only generosity he ever receives is from a kunoichi named Kiriko (Kylie Goldstein), with whom he develops a romantic bond. However, as time goes on, Kiriko becomes disenchanted with the Clan's routine, and wishes to abandon it for freedom. One rainy night, Kiriko decides to make her escape and encourages Raizo to join her; but he decides to stay. Branded as a traitor, Kiriko is caught and later executed in front of Raizo by her elder ninja brother Takeshi (Rick Yune). As a result of Kiriko's death, Raizo begins to harbor resentment and doubt towards the Clan. However, this happens all in flashback, and during this time period that we are speaking, another women assasin attempts to kill Raizo, and he calls her "Kiriko" and asks her, what is her clan